Screening of nitrogen efficient rice (Oryza sativa L.) genotypes under nitrogen deficient calcareous soil

Simple item page
dc.contributor.advisorSINGH, PANKAJ
dc.contributor.authorSAHOO, SANKET
dc.date.accessioned2023-07-05T11:27:29Z
dc.date.available2023-07-05T11:27:29Z
dc.date.issued2021
dc.description.abstract‘A field experimentation was led at Dr. RPCAU Soil Science Research field, under A.I.C.R.P. project, during Kharif season of 2020-21 in a nitrogen deficient (mineralizable nitrogen = 198.9 kg ha-1) sandy loam calcareous soil to study about yield, nutrient uptake capacity and ‘nitrogen use efficiency’ of ten rice genotypes under different ‘levels of nitrogen’ and screening of nitrogen use efficient genotype. The experimental design was split-plot, assigning three levels of nitrogen (0, 60 and 120 kg N ha-1) to the main plot and ten rice varieties (CNN-1, CNN-2, CNN-3, CNN4, CNN-5, BCV-1, MTU-1010, Vardhan, Rasi, T1-93) to the subplots with three replications. Sub-plot size was 7.2 m2 and recommended doses of fertilizer was N : P : K :: 120 : 60 : 40 and ZnSO4 @ 25 Kg ha -1. The results of this investigation were found as, yield and nitrogen uptake of varieties increase linearly with nitrogen doses. But, yield and uptake between genotypes varies on the basis of their genotypic characteristics. The highest agronomic efficiency and physiological efficiency was attained by genotype CNN-5, while the highest apparent nitrogen recovery and utilization efficiency was attained by genotype TI-93, the highest Agro-physiological efficiency was attained by both CNN-5 and CNN-3. However, the highest ‘physiological efficiency index of nitrogen’ and ‘nitrogen harvest index’ was attained by CNN-3. On the basis of ‘Grain Yield Efficiency Index (GYEI)’ BCV-1, Vardhan, MTU-1010 and CNN-5 were found nutrient efficient genotypes, CNN-2 and Rasi were found nutrient inefficient genotypes and CNN-4, CNN-3, CNN-1, TI-93 genotypes were found moderately susceptible. On the basis of average yield of genotypes at low nitrogen level and average Physiological Efficiency Index of Nitrogen (PEIN) of genotypes, BCV-1 and CNN-5 were found efficient and responsive (ER), although both have different yield potential, Vardhan, MTU-1010 were found efficient and non-responsive (ENR), however only CNN-3 was non-efficient and responsive (NER) genotype and CNN-1, CNN-2, CNN-4, Rasi and TI-93 were non-efficient and non-responsive (NENR) genotypes. Among all genotypes under study, BCV-1 was found the best genotype in calcareous soil.en_US
dc.identifier.otherM/SS/358/2019-20
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810197970
dc.keywordsNitrogen efficient rice, Oryza sativa L., genotypes, nitrogen deficient, calcareous soil.en_US
dc.language.isoEnglishen_US
dc.pages63+ Bibliography+ Appendixen_US
dc.publisherDRPCAU, PUSAen_US
dc.subSoil Sciencesen_US
dc.themeScreening of nitrogen efficient rice (Oryza sativa L.) genotypes under nitrogen deficient calcareous soil.en_US
dc.these.typeM.Scen_US
dc.titleScreening of nitrogen efficient rice (Oryza sativa L.) genotypes under nitrogen deficient calcareous soilen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
SANKET SAHOO_M.Sc. Soil Sci._2021.pdf
Size:
1.92 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Thesis